X=.5(a)t^2 can be used: 2.5m=.5(g)(1), g=5m/s^2.
Zero I think, sorry if I’m wrong
Answer:
the index of refraction of the coating is 1.33
Explanation:
Given the data in the question;
refraction index of interior portion of the rod η = 1.55
angle of incidence θ = 59.5°
From Snell's law, we know that;
η × sinθ = η × sinθ
where η is the index of refraction of the rod ( material 1 )
θ is the angle of incidence
η is the index of refraction in outer coating ( material 2 )
θ is the angle of refraction
so we substitute our values into the equation;
η × sinθ = η × sinθ
1.55 × sin( 59.5° ) = η × sin( 90° )
1.55 × 0.861629 = η × 1
1.3355 = η × 1
η = 1.33 { 2 decimal places }
Therefore, the index of refraction of the coating is 1.33
A decagram is 1000 times bigger than a centigram